CVE-2005-1983 in Windows
Summary
by MITRE
Stack-based buffer overflow in the Plug and Play (PnP) service for Microsoft Windows 2000 and Windows XP Service Pack 1 allows remote attackers to execute arbitrary code via a crafted packet, and local users to gain privileges via a malicious application, as exploited by the Zotob (aka Mytob) worm.
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Analysis
by VulDB Data Team • 06/30/2025
The vulnerability described in CVE-2005-1983 represents a critical stack-based buffer overflow within the Plug and Play service of Microsoft Windows 2000 and Windows XP Service Pack 1 systems. This flaw resides in the PnP service implementation which handles device enumeration and management processes, making it a prime target for exploitation. The vulnerability specifically affects the Windows operating system's handling of malformed packets that are processed by the Plug and Play subsystem, creating a dangerous condition where an attacker can manipulate memory layout through crafted input data.
The technical mechanism of this buffer overflow involves the PnP service's failure to properly validate input parameters when processing device-related packets. When a malicious packet is received, the service attempts to copy data into a fixed-size stack buffer without adequate bounds checking, leading to memory corruption that can be exploited to overwrite return addresses and executable code. This vulnerability operates at the kernel level within the Windows operating system, making it particularly dangerous as it can be leveraged for privilege escalation from standard user accounts to SYSTEM level access. The flaw is classified under CWE-121 as a stack-based buffer overflow, which directly enables code execution through memory corruption techniques.
The operational impact of this vulnerability was demonstrated through the widespread exploitation by the Zotob (also known as Mytob) worm, which utilized this weakness to spread across networks and compromise vulnerable systems. The worm could execute arbitrary code remotely, allowing attackers to gain full control of affected machines without requiring authentication. Local exploitation was also possible through malicious applications that could leverage the buffer overflow to elevate privileges, making the vulnerability particularly dangerous in enterprise environments where users might execute untrusted software. This vulnerability affected a large portion of the Windows user base at the time of discovery, as Windows 2000 and XP SP1 were widely deployed across corporate networks.
The exploitation of this vulnerability aligns with several tactics described in the MITRE ATT&CK framework, particularly those related to privilege escalation and execution through system services. Attackers could leverage the PnP service as a vector for initial compromise, then use the elevated privileges to establish persistent access or move laterally within networks. The vulnerability's exploitation required minimal user interaction for remote attacks, making it particularly effective for automated worm propagation. Organizations were advised to implement immediate patches and network segmentation measures to prevent exploitation, as the vulnerability was actively exploited in the wild during 2005. The incident highlighted the importance of service-level security testing and proper input validation in operating system components, particularly those handling external communication protocols. Mitigation strategies included applying Microsoft security updates, disabling unnecessary PnP services, and implementing network-based protections to prevent unauthorized packet processing.
The broader implications of CVE-2005-1983 extend beyond immediate exploitation, as it demonstrated how fundamental service implementations could create pathways for sophisticated attacks. The vulnerability reinforced industry standards around secure coding practices and the importance of memory safety mechanisms in operating system development. Organizations that failed to apply patches promptly faced significant risk of compromise, as the worm could spread rapidly through networks without requiring user interaction or authentication. This vulnerability ultimately contributed to the evolution of more robust security measures in subsequent Windows versions, emphasizing the need for continuous security assessment and proactive patch management. The incident served as a critical learning experience for cybersecurity professionals regarding the importance of protecting system services that handle external input data, particularly those that operate with elevated privileges.